(1*6*9+2*12*18+3*16*27+...+100*600*900)÷(1*2*3+2*4*6+3*6*9+.
(1*6*9+2*12*18+3*16*27+...+100*600*900)÷(1*2*3+2*4*6+3*6*9+.
(1×6×9+2×12×18+3×18×27+.+100×600×900) /
1×3×9+2×6×18+3×9×27+,+100×300×900分之1×2×4+2×4×8+3×6×12+.+100×
1×3×9+2×6×18+3×9×27…+100×300×900分之1×2×4+2×4×8+3×6×12…+100×20
(1×2×4+2×4×8+3×6×12)÷(1×3×9+2×6×18+3×9×27)
1×3×9+2×6×18+3×9×27+.+100×300×900 分之 1×2×4+2×4×8+3×6×12+.+10
1*3*9+2*6*18+3*9*27+4*12*36分之1*2*4+2*4*8+3*6*12+4*8*16
(1×2×4+2×4×8+3×6×12+……+6×12×24)÷(1×3×9+2×6×18+3×9×27+……+6×18
简便计算(1×2×3+2×4×6+3×6×9+.+100×200×300)÷(2×3×4+4×6×8+6×9×12+.+
1*2*4+2*3*8+3*6*12+……+100*200*400/1*3*9+2*6*18+*3*9*27+……+10
1×2×4+2×4×8+3×6×12+...+100×200×400分之1×3×9+2×6×18+3×9×27+...+
求1*3*9+2*6*18+3*9*27+···+100+200+300/1*2*4+2*4*8+3*6*12+···+